GemTOF Analyses of Sapphires from Madagascar and Kashmir
In the beginning of 2017, gem testing laboratories started to receive cut stones from a new area for gem analysis and issuing reports. As stated in a trade-alert by SSEF in early 2017, some of this new sapphire material may resemble internal features of Kashmir blue sapphires, therefore careful microscopic inve
The Talisman of Charlemagne: New Historical and Gemological Discoveries
The Talisman of Charlemagne: New Historical and Gemolog […]
Gemmological Analysis of a Roman Sapphire Intaglio and Its Possible Origin
Gemmological Analysis of a Roman Sapphire Intaglio and […]
Sapphires Heated with Pressure – A Research Update
Sapphires Heated with Pressure – A Research Update. Pub […]
Padparadscha-like Fancy sapphires with Unstable Colours Colouration Mechanisms and Disclosure
Padparadscha-like Fancy sapphires with Unstable Colours […]
Unstable Colouration of Padparadscha-like Sapphires
Unstable Colouration of Padparadscha-like Sapphires. Pu […]
Sapphires from Ambatondrazaka, Madagascar
Madagascar, an island of many gem treasures, saw in recent months another ‘sapphire rush’ after the discovery of a new gem deposit about 35 km east of the small town of Ambatondrazaka.
Pigeon Blood Red & Royal Blue (2017)
GAHK seminar March 2017 on SSEF criteria for Pigeon blood red & Royal blue by Dr. Michael Krzemnicki (SSEF)
Sapphires from a New Deposit at Bemainty near Ambatondrazaka in Madagascar
Sapphires from a New Deposit at Bemainty near Ambatondr […]
New Sapphires from Ambatondrazaka, Madagascar
New Sapphires from Ambatondrazaka, Madagascar. Publishe […]